diff --git a/reactos/dll/win32/advapi32/sec/sec.c b/reactos/dll/win32/advapi32/sec/sec.c
index aafb6b4a43c..6e9ca3262e0 100644
--- a/reactos/dll/win32/advapi32/sec/sec.c
+++ b/reactos/dll/win32/advapi32/sec/sec.c
@@ -607,36 +607,4 @@ EncryptFileA(LPCSTR lpFileName)
     return ret;
 }
 
-
-/*
- * @unimplemented
- */
-BOOL WINAPI
-ConvertSecurityDescriptorToStringSecurityDescriptorW(PSECURITY_DESCRIPTOR pSecurityDescriptor,
-                                                     DWORD dword,
-                                                     SECURITY_INFORMATION SecurityInformation,
-                                                     LPWSTR *lpwstr,
-                                                     PULONG pulong)
-{
-    FIXME("%s() not implemented!\n", __FUNCTION__);
-    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
-    return FALSE;
-}
-
-
-/*
- * @unimplemented
- */
-BOOL WINAPI
-ConvertSecurityDescriptorToStringSecurityDescriptorA(PSECURITY_DESCRIPTOR pSecurityDescriptor,
-                                                     DWORD dword,
-                                                     SECURITY_INFORMATION SecurityInformation,
-                                                     LPSTR *lpstr,
-                                                     PULONG pulong)
-{
-    FIXME("%s() not implemented!\n", __FUNCTION__);
-    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
-    return FALSE;
-}
-
 /* EOF */
diff --git a/reactos/dll/win32/advapi32/sec/sid.c b/reactos/dll/win32/advapi32/sec/sid.c
index 10e703f7795..34b25c91332 100644
--- a/reactos/dll/win32/advapi32/sec/sid.c
+++ b/reactos/dll/win32/advapi32/sec/sid.c
@@ -611,6 +611,65 @@ CopySid(DWORD nDestinationSidLength,
 }
 
 
+/******************************************************************************
+ * ConvertSecurityDescriptorToStringSecurityDescriptorW [ADVAPI32.@]
+ * @unimplemented
+ */
+BOOL WINAPI
+ConvertSecurityDescriptorToStringSecurityDescriptorW(PSECURITY_DESCRIPTOR SecurityDescriptor,
+                                                     DWORD SDRevision,
+                                                     SECURITY_INFORMATION SecurityInformation,
+                                                     LPWSTR *OutputString,
+                                                     PULONG OutputLen)
+{
+    if (SDRevision != SDDL_REVISION_1)
+    {
+        ERR("Pogram requested unknown SDDL revision %d\n", SDRevision);
+        SetLastError(ERROR_UNKNOWN_REVISION);
+        return FALSE;
+    }
+
+    FIXME("%s() not implemented!\n", __FUNCTION__);
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+    return FALSE;
+}
+
+
+/******************************************************************************
+ * ConvertSecurityDescriptorToStringSecurityDescriptorA [ADVAPI32.@]
+ * @implemented
+ */
+BOOL WINAPI
+ConvertSecurityDescriptorToStringSecurityDescriptorA(PSECURITY_DESCRIPTOR SecurityDescriptor,
+                                                     DWORD SDRevision,
+                                                     SECURITY_INFORMATION Information,
+                                                     LPSTR *OutputString,
+                                                     PULONG OutputLen)
+{
+    LPWSTR wstr;
+    ULONG len;
+    if (ConvertSecurityDescriptorToStringSecurityDescriptorW(SecurityDescriptor, SDRevision, Information, &wstr, &len))
+    {
+        int lenA;
+
+        lenA = WideCharToMultiByte(CP_ACP, 0, wstr, len, NULL, 0, NULL, NULL);
+        *OutputString = HeapAlloc(GetProcessHeap(), 0, lenA);
+        WideCharToMultiByte(CP_ACP, 0, wstr, len, *OutputString, lenA, NULL, NULL);
+        LocalFree(wstr);
+
+        if (OutputLen != NULL)
+            *OutputLen = lenA;
+        return TRUE;
+    }
+    else
+    {
+        *OutputString = NULL;
+        if (OutputLen)
+            *OutputLen = 0;
+        return FALSE;
+    }
+}
+
 /******************************************************************************
  * ConvertStringSecurityDescriptorToSecurityDescriptorW [ADVAPI32.@]
  * @implemented